Kourtney by DM’ing her other ex, Younes Bendjima, but Younes put Scott on blast and he seemed jealous and petty.

Kourtney doubled down after Scott’s DM became public, with an image of 2 people kissing with the caption … “Relax … This is going to hurt FOREVER” — followed by, “HOW TO GET OVER SOMEONE who treated you BADLY.”

As for Travis and Kourtney … they’ve taken their romance around the world … smooching in Cabo, Italy and Paris, before returning to the U.S.

Kourtney and Travis have been close friends for years, so they know each other well. It seems only a matter of time … and maybe sooner rather than later.